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Tallinna Elektrotehnika Tehas Estel AS

Tallinna Elektrotehnika Tehas Estel AS
Kuuli 6 ,
Tallinn ,
13619
Estonia
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  5. Estel - Hybrid Diesel Power Unit
Estel - Hybrid Diesel Power Unit

- Hybrid Diesel Power Unit

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Combine Diesel Ground Power Unit  is designed to supply all type of aircraft and helicopter during preflight maintenance at the airport. DGPU consists of a 50 Hz diesel generator set, 400 Hz frequency converter and 28 VDC rectifier. DGPU allows supplying any types of loads with alternating voltage 3×400 / 230 V with a frequency of 50 Hz, alternating voltage 3×200 / 115 V with a frequency of 400 Hz and a constant voltage of 28 VDC.



Main Characteristics

Combine Diesel Ground Power Unit has the ability to work in two power modes:

  • Self-powered mode: supply from internal diesel generator set
  • Hybrid (static) mode: supply from an external power source 3x400V, 50Hz
  • Smart operational TFT display
  • Full diagnostic turn-up test
  • Energy consumption metering system
  • Modularity
  • Maximum individual protection
  • Innovative design
  • Easy operation and maintenance
  • Total harmonic content not more 3.0 %
  • Outgoing 400 Hz 3 phase sinusoidal voltage high quality
  • High efficiency factor
  • Possibility of modification/adjustment in accordance to the Customer’s needs
  • Energy consumption low level

Features

  • Suitable for all types of aircrafts and helicopters
  • High efficiency coefficient
  • Smart operational TFT display
  • Low noise level
  • Full diagnostic turn-up test
  • Designed to comply with RoHS and REACH requirements

Technical Characteristics

Output parameters (AC):

  • Rated output power, kVA: 30-180
  • Rated output voltage phase/line, V: 3 x 115/200
  • Output voltage frequency, Hz: 400 ± 0,001%

Output voltage regulation accuracy, %:

  • for balanced load: ± 0,5
  • for 30 % unbalanced load: ± 0,5
  • Total harmonic content THDU, %:  
    • linear load: ≤2
    • nonlinear load: ≤2

Phase symmetry, electrical degree:

  • for balanced load: 120 ± 1
  • for 30 % unbalanced load: 120 ± 1
  • Crest factor: 1,414 ± 0,04%

Permissible overload, %:

  • within 600 s: 150
  • within 2 s: 400

Output parameters (AC):

  • Rated output power, V: 28,0
  • Rated output current, A: 400-1200
  • Current overload,2s , A: ≤2500
  • Quantity of outputs: 1

Input parameters for static work mode:

  • Supply main rated voltage, V: 3×400 (380)
  • Supply main voltage permitted deviation, %: ± 15
  • Supply nominal frequency, Hz: 50/60
  • Supply main rated frequency deviation, Hz: ± 10
  • Power factor at 100 % load: 1
  • Line Current Distortion at nominal load THDI, %: ≤5
  • Overall efficiency at nominal conditions, %: ≥96
  • Power interruption: up to 25 ms
  • Starting current: No, soft start

Engine technical data:

  • Manufacturer: Caterpillar (or any)
  • Cycle: 4 Stroke
  • Induction: Turbochanged
  • Governing Class: ISO8528 G2
  • Fuel Tank, L: 350
  • Fuel Consumptions, at 100% load: 10 hours

Generator:

  • Number of Bearing: 1
  • Insulation Class: H
  • Wires: 3P+N
  • Radio Interference: Supression is in line
  • with European
  • Standard EN61000-6

Miscellaneous:

  • Overall dimensions  W x H x D, mm: 3300 x 1760 x 1800
  • Weight, kg: ≤3000
  • Ingress protection (converter module): IP55
  • Maximum ambient temperature, º?: plus 56
  • Minimal ambient temperature, º?: minus 50
  • Audible noise, 1m at static mode: 55dBA
  • Relative humidity, %: 30 to 80

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